List questions from spectral-theory

Published on 24 Jul 2014 - 16:00

132

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Fredholm index for 1-d Schroedinger operator

Published on 25 Jul 2014 - 14:07

1.9k

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Spectral theory - continuous spectrum

Published on 30 Jul 2014 - 10:41

618

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Proving that a Sturm-Liouville problem is in the limit-point/-circle case

Published on 30 Jul 2014 - 19:22

588

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Decomposition of a positive semidefinite self-adjoint operator?

Published on 01 Aug 2014 - 19:10

325

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Domain of densely-defined second derivative operator, and its factorization

Published on 01 Aug 2014 - 20:17

1.2k

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Is $AA^$ and $A^A$ self-adjoint?

Published on 02 Aug 2014 - 9:44

445

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Selfadjoint Restrictions of Legendre Operator $-\frac{d}{dx}(1-x^{2})\frac{d}{dx}$

Published on 25 Mar 2026 - 9:50

4.5k

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Ways to calculate the spectrum of an operator

Published on 04 Aug 2014 - 18:11

429

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Prove that if $T=T^*$ and $\sigma(T)=\{\lambda\}$, then $T=\lambda I$

Published on 05 Aug 2014 - 18:31

805

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Example: Algebraic Multiplicity vs Geometric Multiplicity

Published on 05 Aug 2014 - 18:52

400

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estimate the upper bound for the number of the nodes of length $l$

Published on 06 Aug 2014 - 0:41

162

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Relation between $\epsilon$-pseudospectrum of operators

Published on 09 Aug 2014 - 9:59

298

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Definition of exponential for operators

Published on 10 Aug 2014 - 19:12

1.1k

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Spectrum of a finite rank operator

Published on 11 Aug 2014 - 6:38

List Question

Exercise about spectrum of selfadjoint operator.

Fredholm index for 1-d Schroedinger operator

Spectral theory - continuous spectrum

Proving that a Sturm-Liouville problem is in the limit-point/-circle case

Decomposition of a positive semidefinite self-adjoint operator?

Domain of densely-defined second derivative operator, and its factorization

Is $AA^$ and $A^A$ self-adjoint?

Selfadjoint Restrictions of Legendre Operator $-\frac{d}{dx}(1-x^{2})\frac{d}{dx}$

Ways to calculate the spectrum of an operator

Prove that if $T=T^*$ and $\sigma(T)=\{\lambda\}$, then $T=\lambda I$

Example: Algebraic Multiplicity vs Geometric Multiplicity

estimate the upper bound for the number of the nodes of length $l$

Relation between $\epsilon$-pseudospectrum of operators

Definition of exponential for operators

Spectrum of a finite rank operator

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